Fix agent count

src/Managing.Application/Bots/Grains/AgentGrain.cs

@@ -92,7 +92,7 @@ public class AgentGrain : Grain, IAgentGrain
         await ServiceScopeHelpers.WithScopedService<IGrainFactory>(_scopeFactory, async grainFactory =>
         {
             var platformGrain = grainFactory.GetGrain<IPlatformSummaryGrain>("platform-summary");
-            await platformGrain.IncrementAgentCountAsync();
+            await platformGrain.RefreshAgentCountAsync();
             _logger.LogDebug("Notified platform summary about new agent activation for user {UserId}", userId);
         });
     }